INBDE Periodontology practice questions

Question 1

A 52-year-old male presents for a routine exam. Radiographs show interdental bone loss in the posterior quadrants extending to the middle third of the root. He has lost 3 teeth due to periodontitis. Probing depths are 5-6 mm. There is no evidence of tooth drifting or masticatory dysfunction. According to the 2017 classification, what is his periodontal stage?

Accepted Answer

Stage III

Answer

Stage II

Answer

Stage IV

Answer

Stage V

Question 2

A patient presents with generalized gingival enlargement due to a calcium channel blocker. The probing depth on the facial of #9 is 6 mm, and the gingival margin is 3 mm coronal to the cemento-enamel junction (CEJ). What is the clinical attachment loss (CAL) for this site?

Accepted Answer

3 mm

Answer

6 mm

Answer

9 mm

Answer

0 mm

Question 3

Four weeks after completing scaling and root planing (SRP) for a patient with Stage II periodontitis, the primary mechanism of pocket depth reduction is expected to be which of the following?

Accepted Answer

Formation of a long junctional epithelium

Answer

New attachment of connective tissue fibers to the cementum

Answer

Regeneration of the alveolar bone crest

Answer

Re-establishment of the periodontal ligament

Question 4

A 45-year-old heavy smoker (2 packs/day) presents with deep probing depths and significant bone loss, but the gingival tissues appear fibrotic and show minimal bleeding on probing (BOP). Why is BOP often reduced in smokers?

Accepted Answer

Nicotine induces peripheral vasoconstriction

Answer

Smoking increases the number of capillaries in the gingiva

Answer

Smoking inhibits the growth of P. gingivalis

Answer

Smoking enhances the phagocytic activity of neutrophils

Question 5

During a periodontal examination, the clinician uses a Nabers probe on the maxillary first molar. The probe penetrates into the furcation and passes completely through to the other side, but the furcation is not clinically visible because it is covered by gingiva. What is the Glickman furcation classification?

Accepted Answer

Grade III

Answer

Grade I

Answer

Grade II

Answer

Grade IV

Question 6

A patient with well-controlled Type 2 Diabetes (HbA1c = 6.5%) shows 1 mm of radiographic bone loss over the last 5 years. There are no other systemic modifiers. According to the 2017 classification, what is the most appropriate Grade for this patient?

Accepted Answer

Grade B

Answer

Grade A

Answer

Grade C

Answer

Grade D

Question 7

Which of the following clinical findings distinguishes peri-implantitis from peri-implant mucositis?

Accepted Answer

Radiographic bone loss

Answer

Bleeding on probing

Answer

Presence of plaque

Answer

Suppuration

Question 8

The concept of 'biologic width' (now termed supracrestal tissue attachment) refers to the combined vertical dimension of which two structures?

Accepted Answer

Junctional epithelium and connective tissue attachment

Answer

Sulcus depth and junctional epithelium

Answer

Connective tissue attachment and alveolar bone

Answer

Sulcus depth and connective tissue attachment

Question 9

According to the 2017 World Workshop, a patient with 4 mm probing depths, generalized bleeding on probing, and no history of clinical attachment loss or radiographic bone loss should be diagnosed with:

Accepted Answer

Gingivitis

Answer

Health on a reduced periodontium

Answer

Stage I Periodontitis

Answer

Incipient Periodontitis

Question 10

A 30-year-old female presents with mobile lower incisors. Clinical exam reveals 6 mm probing depths on the mesial of #24 and #25. Radiographs show vertical bone loss. Her father lost his teeth at age 35. What is the most likely 'Grade' modifier for this patient?

Accepted Answer

Grade C based on the 'indirect evidence' of rapid progression

Answer

Grade A because she is young

Answer

Grade B because her HbA1c is unknown

Answer

Grade C based on smoking status

INBDE Periodontology practice questions

A patient presents with generalized gingival enlargement due to a calcium channel blocker. The probing depth on the facial of #9 is 6 mm, and the gingival margin is 3 mm coronal to the cemento-enamel junction (CEJ). What is the clinical attachment loss (CAL) for this site?

Four weeks after completing scaling and root planing (SRP) for a patient with Stage II periodontitis, the primary mechanism of pocket depth reduction is expected to be which of the following?

A 45-year-old heavy smoker (2 packs/day) presents with deep probing depths and significant bone loss, but the gingival tissues appear fibrotic and show minimal bleeding on probing (BOP). Why is BOP often reduced in smokers?

A patient with well-controlled Type 2 Diabetes (HbA1c = 6.5%) shows 1 mm of radiographic bone loss over the last 5 years. There are no other systemic modifiers. According to the 2017 classification, what is the most appropriate Grade for this patient?

Which of the following clinical findings distinguishes peri-implantitis from peri-implant mucositis?

The concept of 'biologic width' (now termed supracrestal tissue attachment) refers to the combined vertical dimension of which two structures?

According to the 2017 World Workshop, a patient with 4 mm probing depths, generalized bleeding on probing, and no history of clinical attachment loss or radiographic bone loss should be diagnosed with:

A 30-year-old female presents with mobile lower incisors. Clinical exam reveals 6 mm probing depths on the mesial of #24 and #25. Radiographs show vertical bone loss. Her father lost his teeth at age 35. What is the most likely 'Grade' modifier for this patient?

The first 10 are free. 6 more below.

Which of the following is the most significant local risk factor for the progression of a furcation defect?

When performing a periodontal exam, you note that tooth #19 can be depressed vertically in its socket. This represents what class of mobility?

What is the primary objective of Guided Tissue Regeneration (GTR)?

A patient returns 6 weeks after SRP. Most sites show improvement, but the mesial of #3 still has a 6 mm pocket with bleeding and subgingival calculus visible on a bitewing. What is the most appropriate next step?

In the pathogenesis of periodontitis, which cell type is predominant in the 'Early Lesion' of gingivitis (occurring 4–7 days after plaque accumulation)?

Which clinical parameter is the most reliable indicator of current inflammatory disease activity in a periodontal patient?